17944426480 has 20 divisors (see below), whose sum is σ = 41720791752. Its totient is φ = 7177770560.

The previous prime is 17944426433. The next prime is 17944426529. The reversal of 17944426480 is 8462444971.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×17944426480² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112152586 + ... + 112152745.

Almost surely, 2^17944426480 is an apocalyptic number.

17944426480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17944426480 is an abundant number, since it is smaller than the sum of its proper divisors (23776365272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17944426480 is a wasteful number, since it uses less digits than its factorization.

17944426480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224305344 (or 224305338 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 17944426480 in words is "seventeen billion, nine hundred forty-four million, four hundred twenty-six thousand, four hundred eighty".